Computer Proficiency Practice Test

ARPA is an infrastructure TLD. What does ARPA stand for?

Address and Routing Parameter Area Advanced Routing Parameter Area Addressable Resource Parameter Area Administrative Routing Policy Area

Correct Answer:

Address and Routing Parameter Area

Explanation:

In the DNS infrastructure, ARPA is used for technical infrastructure tasks and its name expands to Address and Routing Parameter Area. This domain is reserved for purposes like reverse DNS, not for ordinary hostnames. The expansion "Address and Routing Parameter Area" is the official meaning tied to the arpa top-level domain, which is why it’s the best answer. The other options don’t match the established wording used for this infrastructure domain (for example, ARPANET’s original name referred to the Advanced Research Projects Agency, not a DNS expansion).

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